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3-amino-3-methylbutanoic acid

Also known as: 3-AMINO-3-METHYL-BUTYRIC ACID, 3-Amino-3-methyl-butyric acid, 3-Amino-3-methylbutanoicaci, 3-amino-3-methyl butanoic acid, 3-azanyl-3-methyl-butanoic acid, Butanoic acid, 3-amino-3-methyl-, beta-Aminoisovaleric acid, β,β-dimethyl-β-amino-propanoic acid

3-amino-3-methylbutanoic acid (CAS 625-05-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H11NO2 and a molecular weight of 117.146 g/mol. Key properties include a melting point of 232-233ºC, a boiling point of 220.7±23.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 87.3±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
625-05-8
Jingsj CID
J-998487-6
Molecular Formula
C5H11NO2
Molecular Weight
117.146 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point232-233ºC
Boiling Point220.7±23.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point87.3±22.6 °C
Exact Mass117.078979
PSA63.32000
LogP-0.16
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.466

Customs & Trade Information

HS Code2922499990
SummaryHS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-amino-3-methylbutanoic acid?

The CAS number of 3-amino-3-methylbutanoic acid is 625-05-8.

What are the molecular formula and molecular weight of 3-amino-3-methylbutanoic acid?

3-amino-3-methylbutanoic acid has molecular formula C5H11NO2 and molecular weight 117.146 g/mol.

What are the upstream and downstream products of 3-amino-3-methylbutanoic acid?

For 3-amino-3-methylbutanoic acid, Upstream Products: 3-(Benzylamino)-3-methylbutanoic acid, 3-Methyl-2-butenoic acid, 6,6-Dimethyldihydropyrimidine-2,4(1H,3H)-dione; Downstream Products: 3-Amino-3-methylbutan-1-ol, 3-[(tert-Butoxycarbonyl)amino]-3-methylbutanoic acid, 3-(((Benzyloxy)carbonyl)amino)-3-methylbutanoic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "3-amino-3-methylbutanoic acid (CAS 625-05-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-998487-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.